There is on earth among all dangers no more dangerous thing than a richly endowed and adroit reason...Reason must be deluded, blinded, and destroyed.

I was born to fight devils and factions. It is my business to remove obstacles, to cut down thorns, to fill up quagmires and to open and make straight paths. If I must have some failing let me rather speak the truth with too great sincerity than once to act the hypocrite and conceal the truth.

It is the part of a Christian to take care of his own body for the very purpose that, by its soundness and wellbeing, he may be enabled to labour, and to acquire and preserve property, for the aid of those who are in want, that thus the stronger member may serve the weaker member, and we may be children of God, and busy for one another, bearing one another's burdens, and so fulfiling the law of Christ.

Let a man be endowed with ten virtues and have but one fault and the one fault will eclipse and darken all the virtues.

The kingdom of God does not consist in talk, but in power, that is, in works and practice. God loves the 'doers of the word' in faith and love, and not the 'mere hearers,' who, like parrots, have learned to utter certain expressions with readiness.

Look to it that you do not try to do all of it, do not try to do too much, lest your spirit grow weary. Besides, a good prayer mustn't be too long. Do not draw it out. Prayer ought to be frequent and fervent.

I only ask in all kindness that the man who wishes at this time to have my books will by no means let them be a hindrance to his own study of the Scriptures, but read them as I read the orders and the ordures of the pope and the books of the sophists.